[AnthonyMouse]

Using used parts for repairs is normal practice. It makes little sense to manufacture a new body panel when there is a perfectly good one from a vehicle with a bad drivetrain just sitting there in a junkyard.

The trouble right now is because Tesla has only recently started delivering in meaningful volumes, there is no big supply of them in junkyards to pull parts from. And for much the same reason there are no independent parts suppliers yet, so the company has a temporary monopoly on parts.

Whether their attitude changes when the parts monopoly erodes remains to be seen, but competition has a way of shifting corporate behavior.

And some of the current behavior is within reason, e.g. if you have free supercharging it's not so you can modify your car to sell that power back to the grid, or take the VIN of a wrecked car with free supercharging and try to transfer it to an entirely different car by exchanging a couple of parts. There has to be some process to make sure that's not what's happening.